Rotatory abdominal crunch machine

Details Rotatory abdominal crunch machine Rotatory abdominal crunch machine

2007-02-26

2008-10-21

Mathew, Fenn C (Department: 3764)

Exercise devices

Sit up device

C482S147000

Reexamination Certificate

active

07438675

ABSTRACT:
A rotatory abdominal crunch machine mainly uses a rotating disc fitted on an eccentric revolution disc to assist the user in swinging his or her waist in circular motion so as to strengthen the abdominal muscles. A rolling element, which is embedded in said rotating disc, drives said rotating disc to rotate in 360 degrees.

REFERENCES:
patent: 5941807 (1999-08-01), Cassidy et al.
patent: 7118519 (2006-10-01), Slowinski
patent: 2007/0298945 (2007-12-01), Mehta

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